The final countdown for humanity's most distant messengers
In short: Voyager 2 is currently screaming through interstellar space, but its heart is fading. Powered by a dwindling nuclear supply, the spacecraft is entering a twilight era where engineers must choose which scientific eyes to blink first to keep the mission alive.
Launched in September 1977, the twin Voyager probes were originally designed to conduct a reconnaissance of the giant planets in our solar system. They have long since exceeded their expected lifespans, becoming the only human-made objects to ever reach the edge of interstellar space. Voyager 1 crossed this threshold in 2012, followed by Voyager 2 six years later. They are currently escaping our solar system at speeds exceeding 3 astronomical units (AU) per year, where 1 AU represents the distance from the Earth to the Sun.
The primary challenge is energy. The spacecraft now have access to only a small fraction of the 470 watts of power they generated immediately after launch. Because they lose approximately four watts of power every year, NASA engineers at the Jet Propulsion Laboratory (JPL) have been systematically turning off instruments to conserve electricity. Just three of the initial ten active tools on Voyager 2 remain functional today: the plasma wave subsystem, the magnetometer, and the cosmic ray subsystem.
To combat this decline, NASA is planning a high-stakes maneuver in 2026 nicknamed the 'Big Bang.' The goal is to swap out three devices used to prevent thruster fuel lines from freezing for three different devices that use almost 10 watts less power. If this risky engineering feat succeeds, it could delay the need to shut down any further science instruments by at least one year, buying precious time for the probes to continue their journey toward the Oort Cloud and beyond.
Opens the Intellect+ feed with this card first. Swipe up for the next one.
Sources
- Summary by Intellect · source: How Far Will Voyager 2 Actually Travel Before It Shuts Down Forever?
- Also: NASA Science — Voyager - NASA Science
- Also: NASA
To cite this card, link to https://intellectplus.co.uk/app/space-how-far-will-voyager-2-actually-travel-before-it-shuts-down-.
How we source, check and correct cards: Editorial standards.
General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.
Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?
Related
More in Space · Latest · A–Z · All topics
